2 * CIPSO - Commercial IP Security Option
4 * This is an implementation of the CIPSO 2.2 protocol as specified in
5 * draft-ietf-cipso-ipsecurity-01.txt with additional tag types as found in
6 * FIPS-188, copies of both documents can be found in the Documentation
7 * directory. While CIPSO never became a full IETF RFC standard many vendors
8 * have chosen to adopt the protocol and over the years it has become a
9 * de-facto standard for labeled networking.
11 * Author: Paul Moore <paul.moore@hp.com>
16 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2 of the License, or
21 * (at your option) any later version.
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
26 * the GNU General Public License for more details.
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
37 #include <linux/types.h>
38 #include <linux/rcupdate.h>
39 #include <linux/list.h>
40 #include <net/netlabel.h>
42 /* known doi values */
43 #define CIPSO_V4_DOI_UNKNOWN 0x00000000
46 #define CIPSO_V4_TAG_INVALID 0
47 #define CIPSO_V4_TAG_RBITMAP 1
48 #define CIPSO_V4_TAG_ENUM 2
49 #define CIPSO_V4_TAG_RANGE 5
50 #define CIPSO_V4_TAG_PBITMAP 6
51 #define CIPSO_V4_TAG_FREEFORM 7
53 /* doi mapping types */
54 #define CIPSO_V4_MAP_UNKNOWN 0
55 #define CIPSO_V4_MAP_STD 1
56 #define CIPSO_V4_MAP_PASS 2
59 #define CIPSO_V4_MAX_REM_LVLS 256
60 #define CIPSO_V4_INV_LVL 0x80000000
61 #define CIPSO_V4_MAX_LOC_LVLS (CIPSO_V4_INV_LVL - 1)
62 #define CIPSO_V4_MAX_REM_CATS 65536
63 #define CIPSO_V4_INV_CAT 0x80000000
64 #define CIPSO_V4_MAX_LOC_CATS (CIPSO_V4_INV_CAT - 1)
67 * CIPSO DOI definitions
70 /* DOI definition struct */
71 #define CIPSO_V4_TAG_MAXCNT 5
76 struct cipso_v4_std_map_tbl *std;
78 u8 tags[CIPSO_V4_TAG_MAXCNT];
81 struct list_head list;
83 struct list_head dom_list;
86 /* Standard CIPSO mapping table */
87 /* NOTE: the highest order bit (i.e. 0x80000000) is an 'invalid' flag, if the
88 * bit is set then consider that value as unspecified, meaning the
89 * mapping for that particular level/category is invalid */
90 struct cipso_v4_std_map_tbl {
109 #ifdef CONFIG_NETLABEL
110 extern int cipso_v4_cache_enabled;
111 extern int cipso_v4_cache_bucketsize;
112 extern int cipso_v4_rbm_optfmt;
113 extern int cipso_v4_rbm_strictvalid;
120 #define CIPSO_V4_OPTEXIST(x) (IPCB(x)->opt.cipso != 0)
121 #define CIPSO_V4_OPTPTR(x) ((x)->nh.raw + IPCB(x)->opt.cipso)
127 #ifdef CONFIG_NETLABEL
128 int cipso_v4_doi_add(struct cipso_v4_doi *doi_def);
129 int cipso_v4_doi_remove(u32 doi, void (*callback) (struct rcu_head * head));
130 struct cipso_v4_doi *cipso_v4_doi_getdef(u32 doi);
131 struct sk_buff *cipso_v4_doi_dump_all(size_t headroom);
132 struct sk_buff *cipso_v4_doi_dump(u32 doi, size_t headroom);
133 int cipso_v4_doi_domhsh_add(struct cipso_v4_doi *doi_def, const char *domain);
134 int cipso_v4_doi_domhsh_remove(struct cipso_v4_doi *doi_def,
137 static inline int cipso_v4_doi_add(struct cipso_v4_doi *doi_def)
142 static inline int cipso_v4_doi_remove(u32 doi,
143 void (*callback) (struct rcu_head * head))
148 static inline struct cipso_v4_doi *cipso_v4_doi_getdef(u32 doi)
153 static inline struct sk_buff *cipso_v4_doi_dump_all(size_t headroom)
158 static inline struct sk_buff *cipso_v4_doi_dump(u32 doi, size_t headroom)
163 static inline int cipso_v4_doi_domhsh_add(struct cipso_v4_doi *doi_def,
169 static inline int cipso_v4_doi_domhsh_remove(struct cipso_v4_doi *doi_def,
174 #endif /* CONFIG_NETLABEL */
177 * Label Mapping Cache Functions
180 #ifdef CONFIG_NETLABEL
181 void cipso_v4_cache_invalidate(void);
182 int cipso_v4_cache_add(const struct sk_buff *skb,
183 const struct netlbl_lsm_secattr *secattr);
185 static inline void cipso_v4_cache_invalidate(void)
190 static inline int cipso_v4_cache_add(const struct sk_buff *skb,
191 const struct netlbl_lsm_secattr *secattr)
195 #endif /* CONFIG_NETLABEL */
198 * Protocol Handling Functions
201 #ifdef CONFIG_NETLABEL
202 void cipso_v4_error(struct sk_buff *skb, int error, u32 gateway);
203 int cipso_v4_socket_setopt(struct socket *sock,
206 int cipso_v4_socket_setattr(const struct socket *sock,
207 const struct cipso_v4_doi *doi_def,
208 const struct netlbl_lsm_secattr *secattr);
209 int cipso_v4_socket_getopt(const struct socket *sock,
212 int cipso_v4_socket_getattr(const struct socket *sock,
213 struct netlbl_lsm_secattr *secattr);
214 int cipso_v4_skbuff_getattr(const struct sk_buff *skb,
215 struct netlbl_lsm_secattr *secattr);
216 int cipso_v4_validate(unsigned char **option);
218 static inline void cipso_v4_error(struct sk_buff *skb,
225 static inline int cipso_v4_socket_setattr(const struct socket *sock,
226 const struct cipso_v4_doi *doi_def,
227 const struct netlbl_lsm_secattr *secattr)
232 static inline int cipso_v4_socket_getattr(const struct socket *sock,
233 struct netlbl_lsm_secattr *secattr)
238 static inline int cipso_v4_skbuff_getattr(const struct sk_buff *skb,
239 struct netlbl_lsm_secattr *secattr)
244 static inline int cipso_v4_validate(unsigned char **option)
248 #endif /* CONFIG_NETLABEL */
250 #endif /* _CIPSO_IPV4_H */